Ionic-liquid-assisted synthesis of the phosphorus interhalides [PBr4][IBr2] and [PBr4][I5Br7]

被引:12
|
作者
Hausmann, David [1 ]
Koppe, Ralf [1 ]
Wolf, Silke [1 ]
Roesky, Peter W. [1 ]
Feldmann, Claus [1 ]
机构
[1] Karlsruhe Inst Technol, Inst Anorgan Chem, Engesserstr 15, D-76131 Karlsruhe, Germany
关键词
SENSITIZED SOLAR-CELLS; CRYSTAL-STRUCTURE; RAMAN-SPECTRA; IODINE; SALTS; MONOANIONS; BROMINE; ANIONS; POLYHALIDES; HALOGEN;
D O I
10.1039/c6dt03303b
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
The phosphorus interhalides [PBr4][IBr2] (1) and [PBr4](2)[I5Br7] (2) were prepared by reaction of PBr5 and the interhalogen IBr in the ionic liquid [MeBu3N][N(Tf)(2)] (N(Tf)(2): bis(trifluoromethylsulfonyl)amide). [PBr4][IBr2] (1) consists of tetrahedral [PBr4](+) cations and linear [IBr2](-) anions. [PBr4](2)[I5Br7] (2) also contains [PBr4](+) cations as well as the iodine bromide anion [I5Br7](2-). The latter represents the yet largest known polyiodinebromide. Moreover, (2) shows remarkable halogen release (IBr and Br-2) of 96.8 wt% below 300 degrees C. For the ternary system P-Br-I, (1) and (2) are the first compounds that were characterized by crystal structure analysis. Composition, bonding situation and properties were further validated by energy dispersive X-ray (EDX) analysis, thermogravimetry (TG) and Raman spectroscopy.
引用
收藏
页码:16526 / 16532
页数:7
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